firewire: ohci: speed up PHY register accesses

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Most PHY chips, when idle, can complete a register access in the time
needed for two or three PCI read transactions; bigger delays occur only
when data is currently being moved over the link/PHY interface.  So if
we busy-wait a few times when waiting for the register access to finish,
it is likely that we can finish without having to sleep.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>

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Clemens Ladisch 2010-06-10 08:22:07 +02:00

parent f9c70f9129

commit 153e397920

1 changed files with 10 additions and 4 deletions

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drivers/firewire/ohci.c

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